Window-blind fastener.



F. B. JOHNSON. WINDOW BLIND FASTENER. APPLICATION man MAR. '23. 1916.

1,203,351.. Patented 00. 31,1916.

/0 June whom I M'Inesses S077,

lmmm 5 FRANK B. JOHNSON, OF BOSTON, MASSACHUSETTS.

WINDOW-BLIND FASTENER.

Specification of Letters Patent. :Patentefl Oct, 31, 1916 Applicationfiled Mar-ch 23, 1916. Serial No. 86,144.

To all whom it may concern:

Be it known that I, FRANK B. JoHNsoN,

a citizen of the United States, residing at Boston, in the county of-Sulfolk, State of Massachusetts, have invented certain new andusefulImprovements in VVindow-Blind Fasteners; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to window blind fasteners, and has for itsprimary object to provide a simple and eiiicient means capable of readyapplication to a window frame or casing, and which may be operated toretain a window blind in open position and to hold the same positivelyagainst being closed. V

A further object of the invention is to provide a device of thischaracter which is preferably so positioned upon a window frame orcasing as to enable the same to be operated from within the room andwithout leaning out of the window or extending the hands or arms beyondthe walls of the building to which the device is applied.

A further object of the invention is to provide a device of thecharacter described which is of extremely simple and inexpensiveconstruction, which may be attached to or detached from a window frame,which is positive in operation, and which "will prove successful in theattainment of the ends for which it is designed. V

\Vith these objects in view, together with others which will appear asthe description proceeds, the invention resides in the novel combinationand arrangement of parts, all as will be described morefully'hereinafter, illustrated in the drawings and particularly pointedout in the claims.

The invention will be best understood by reference to the accompanyingdrawings, wherein: r V

Figure 1, is a fragmentary side elevation ofa portion of a window frameand illustrating the application of a fastener embodying my invention,Fig. 2, is a similar view illustrating the fastener swung to:inoperative position. Fig. 3 is atop plan View of the fastener, partly.in section, a portion of the fixed member being omitted, and Fig. 4, isa detail perspective view of the fastener removed from the frame.

Referring now more particularly to the drawings, 5 indicates a fixedmember, which i in the present instance is in the form of a screw,having its shank twisted or coiled as at 6 adjacent its outer end, andhaving its. extremity bent to form a rest or support 7. This restprovides a channel,

closed at its lower end, and open at its upper end as shown, the saidchannel beingv relatively narrow throughout its extent. The screw memberthus formed is adapted to be screwed or otherwise secured to'theexterior of a window frame or casing with the said coil and: supportmembers pro truding slightly beyond the lines of the;

frame. It will be understood that there will be oneof theabovementioned' fixedior screw members at each side of the window frame,

and preferably adjacent the inner edge of the said frame. 7

The blind holding means comprises an arm 8. This arm is provided as at 9with a loop or coil member for engagement around the coil 6 upon thefixed or screw member, the said loop 9 being positioned upon the stem orarm 8 inwardly a short distance from one extremity thereof,ywhereby adetent or projection 10 is formed at the arm extremity and lying in thesame plane with the saidarm. 'The above described arm at its oppositeend is preferably enlarged as shown to provide a sur-' face ofsufficient areato engage against and retain a shutter against swingingmovement.

heavy spring wire as shown, and the detent or pro ection 10 1Sso'arranged as to engage The arm 8 maybe formed of relatively when thearm is swung upon its loop 9 to'.'

vertical position, against the adjacent surface of the fixed member 5 t0frictionally engage and retain the arm in vertical posia tion. It isthus seen'that the shutter re taining arm is securely held ininoperative position. When the arm 8 is swungjdownwardly with its loop9' as a pivot the said arm enters and rests within the channel formed bythe support 7, the said armrlying directly behind and engaging againstthe rear edge of an open shutter. Swinging movement of theshutter uponits hinged portion will be prevented, andlateral movement of the arm 8'withinthe rest or support 7 will also be prevented.

When'it is desired to close the shutter the arm 8 may be raisedfromhorizontal to ver-' tical position, whereupon the shutter will be freeto be swung upon its hinges to closed position.

It is apparent that the simplicity of the device enables the same to beproduced or manufactured at extremely low cost, and also enables thedevice to be readily and easily applied to or detachedfrom a windowframe or casing when desired.

lVhile I have herein shown and described a particular or preferredembodiment of the invention, I wish it to be understood that I need notconfine myself to all the precise details of construction herein setforth by Way of illustration as modification and Variation may be madewithout departing from the spirit of the invention or exceeding thescope of the claims.

What is claimed is:

1. In a device of the class described, a fixed member, a loop on saidmember, a rest adjacent said loop, an arm, a loop on said arm inclosingthe loop on said fixed member and adapted to slide thereon, the said armbeing limited in its downward swinging movement by said rest, and therear extremity of said arm being frictionally ell-- swung to horizontalposition to engage with said rest, and the rear end. of said arm beingadapted when swung to vertical position to fricti'onally engage withsaid screw member, substantially as described.

In testimony whereof, I afiix my signature, in the presence of twowitnesses.

FRANK B. JOHNSON. lVitnesses MURDooK CAMPBELL, JOHN R. MCLEOD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

